Safety-razor blade



my 1 1924. mwg

C. SCHOENERT SAFETY RAZOR BLADE Filed March 9, 1922 @JZ QQ QQQQQQQQQQQQQQQQQQQQQQQQ I N VEN TOR.

A TTORNEYS etmaal any i, ieee.

entre arras C SCHOENERT, OF NEWARK, NEW JERSEY.

SAFETY-RAZOR BLADE.

Application filed March 9, 1922. Serial No. 542,333..

To aZZ whom t may concern:

Be it known that I, CARL SoHonNnn'r, a. citizen of the United States, and resident of Newark, in the county ofEssex and State t of New Jersey, have invented certain new and useful improvements in Safety-Razor Blades, ot which the following is a specication.

Theprincipal object of this invention is Lo to provide a new and improved construction in a razor blade.

A further object is to provide a construction of a razor blade by means of which a sliding movement of the blade over the skin l will cause a relative transverse movement of the skin and consequently of the hairs with respect to the blade.

For the accomplishment ci? these and such -turther objects as will hereinafter be ap- 3o parent to those skilled in the art to which this appertains, the invention consists in the construction, combination and arrangement of parts herein specically described and illustrated in the accompanying drawings,

at 'wherein is shown a preferred embodiment ot the invention, but it is to be understood that changes, variations and modifications may be resorted to which fall within the scope of the claims hereunto appended.

3o ln the drawings forming a portion oir this specification Fi l is a plan view of my invention as applled to a safety razor blade,

Fig. 2 is a section on the line 2-2 of e5 Fig. l.

Fig. 3 is a view looking et the blade.

Fig. d is a perspective view of a blade partly broken away.

lo Fig. 5 is an enlarged diagrammatic showing vof the e'ect produced by the improved blade upon the skin.

Figs. 6 and 7 are diagrammatic views illustrating the transverse movement ot the le skin.

As shown in the drawings, 10 is a razor blade having adjacent the cutting edge ll, thereof, a series of depressions 12 extending a short distance inward from the cutting e@ edge and perpendicular thereto, vinto the blade and forming a series of projecting ribs 13.

rllhese ribs and projections may be provided on either one or both sides ot the blade as will be readily understood.

towards the edge lt is well known that a proper cutt action can only be obtained when the cutting edge ot the razor, knife or other instrument is moved transversely or slid across the object to be cut. When a razor blade rovided with my invention is pressed a amst and drawn over the skin, the skin wil move up'- wardly into the depressions between the ribs. rlhis is illustrated in Fig. 5 in which the letter A indicates the skin showing it raised into a series of ridges indicated. by the numeral l5. The line B C indicates the cutting edge of the blade and it will be obvious that as the blade is drawn along the skin it will be forced up into the depressions at a point a short distance behind the cutting edge. rlhis will cause the skin to move transversely at these points which movement will necessarily cause a somewhat similar transverse movement at the cutting edge which is indicated by the arrows D, thus causing a relative sliding movement between the razor edge and the hair.

Fig. 6 illustrates graphically the transverse movement Aont the hair due to the projecting ribs and depressions.

rlhe line B C indicates the cutting edge of the razor and F a hair. The arrow Gr indicates the direction ot movement of lthe blade and the dotted line circle the relative movement ot the hair as the razor is moved in the direction G.

lin the triangle shown in Fig. 7, the line F represents the movement ot the blade, the line F llt the movement of the hair and the line 0 lt, the component of these movements; thus illustrating clearly the actual result obtained.

While l have illustrated my invention as embodied in a safety razor blade, it will be obvious that the same is not limited thereto but is applicable to any type, of a razor blade.

Having thus described my invention what l claim as new and desire to secure by lbetters Patent of the United States, is

f1. A razor blade having a series of ermanently fixed corrugations in such c ose proximity to the cutting edge as to cause a relative transverse movement between the skin and thecutting edge as the blade is drawn over the skin.

2. A. razor blade having a series ot projecting ribs with a series of depressions be tween sald ribs, in such close proximity to Meerane intersecting the beveis which define the eutting edge of the blade.

Signed at New York, in the county 01"' New York and State of New York, this 8th day of March A. D. 1922.

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